Rotary brush



(No Model.)

F. G. PARNHAM.

ROTARY BRUSH.

Patented Nov. 17, 1896.

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UNITED STATES ATENT FFICE.

ROTARY BRUSH.

SPECIFICATION forming part of Letters Patent No. 571,559, dated November17, 1896.

Application filed February l0, 1896. Serial No. 578,749. (No model.)

To @ZZ whoa/z, may concern,.-

Be it known that I, FRANK G. FARNHAM, a citizen of the United States,residing at I'Ionesdale, in the county of l/Vayne and State ofPennsylvania, have invented certain new and usef ul Improvements inRotary Brushes, of which the following is a specification, referencebeing had therein to the accompanying drawings.

My invention relates to rotary brushes of that class iu which the brushis composed of radially-arran ged. fibers held in the forni of Vdisks bymeans of' a hollow hub and flanges 'Xed around the hub..

It consists of' a special construction, all as hereinafter explained.

My said invention is illustrated inthe accom panying drawings, in which-Figure l shows the brush in side elevation, and 2 shows a centraltransverse section. Fig. 3 is a sectional View, enlarged, of a hubbefore it is reduced.

In the drawings, A represents the body of the brush, whichis composed ofany suitable material arranged radially, the mass of the fibers beingheld at the inner ends and about the hub. The basis or main portion ofthe hub consists of a hollow hub B.

As shown in the drawings, the hub B is composed of two parts I) b'.These two parts are exactly alike, excepting that one is made smaller,so as to t snugly one within the other. Both are formed with outer angesc, which are turned integral with the tubular part, and when the partsare puttogether they are held, if made of wood, by means of glue. lVhileI prefer to make the parte of wood, I do not confine myself to thismaterial.

The bers forming the body of the brush are arranged, as aforesaid,radially about this central tubular part. Next to the body or fibers isplaced on each side a disk of cloth, (m arked d.) These diskshave acentral hole made to fit snugly about the tubular part of the hub andthe outer margins extend out over the body of fibers, to which they areheld by stitching e, made to pass through the body of the fibers andthrough both disks, thus binding the flexible cloth disks upon the bodyof the ber and holding the fiber firmly, yet flexibly. The inner ends ofthe bers are held firmly in place by being saturated with glue, whichholds them in place, and this glue also penetrates and holds the innerodge of the disk of cloth. In order to cover this saturated portion ofthe cloth disk, and at the same time to make a more rigid and solidfinish about the center of the brush and a finish through which the gluewill not penetrate, I place over the disks of cloth other disks f, ofstiff material, preferably Manila paper, these disks having holes fittedto the tubular part of' the hub. These disks also furnish a solidbearing for the anges of the tubular part, and being put in place whilethe glue is still fresh they are gluedto the cloth. They do not permitthe glue to soak through and deface the outer surface and at the sametime they afford a suitable surface for printing whatever it may bedesired to print upon the article.

It will be apparent that the fibers may be arranged about the outertubular part l), with the disks on one side in place, the disks on theother side then being added after the glue has been applied, and finallythe inner tubular part l?, properly covered with glue, is put in place.This construction gives a solid tubular hub adapted to be put upon aspindle with rigid holding-disks neXt to the tubular hub and withmarginal flexible holdin g-disks 'connected thereto and flexibly holdingthe fibers.

I have found that the flange in the tubular hub cannot be turned as thinas required without breaking. In order to overcome this, I turn thefianges of double thickness, as shown in Fig. 8, and with a small groovein the periphery thereof, so that after the brush parts are securedtogether and all firmly attached the end flanges may be sawed at theirgrooved portions, leaving the flanges of onehalf thickness.

I claim- A brush consisting of radially-arranged fibers, a centraltubular hub comprising two parts each having one end flanged and withthe hanged ends reversed, iiekible disks on each side of the fibers andwith stiff disks covering the flexible disks, the whole being securedtogether, substantially as described.

In testimony whereof I affix my signature in presence of two witness.

FRANK G. FARNHAM. Witnesses Ros. A. Snrrn, CARROLL S. MIDDLETON.

IOO

